GrowPAR
PPFD, DLI & Light Optimizer
Free · Designed for iPad. Not verified for macOS.
GrowPAR turns your iPhone into a professional-grade PAR light meter for indoor growing, hydroponics, and plant research.
What is PAR?
Photosynthetically Active Radiation (PAR) measures the light your plants actually use for photosynthesis — between 400–700nm. Unlike lux meters, GrowPAR measures what matters most to your plants.
KEY MEASUREMENTS
- PPFD (μmol/m²/s) — Instant photon flux density
- DLI (mol/m²/day) — Daily Light Integral for growth optimization
- CCT (Kelvin) — Color temperature of your light source
- Lux — Illuminance measurement
PLANT INTELLIGENCE
GrowPAR includes a database of 36+ plants with scientifically accurate targets:
- Stage-based PPFD targets: Seedling → Vegetative → Flowering → Harvest
- Ideal temperature (day/night), humidity, and CO₂ levels
- Hydroponics parameters: pH range and EC values
- LED distance and photoperiod recommendations
- Real-time sufficiency indicator: Is your light enough?
LIGHT SOURCES
Calibrated for all grow light types:
- Full Spectrum LED • Red/Blue LED • HPS • CMH • Natural Sunlight
MEASUREMENTS & HISTORY
- Save unlimited measurements with timestamp
- Filter by plant and light source
- Export to CSV for analysis
CALIBRATION
Use with Apogee MQ-500 or similar quantum sensor for research-grade accuracy.
11 LANGUAGES
Turkish · English · German · Spanish · French · Italian · Portuguese · Russian · Japanese · Chinese · Arabic
Whether you're growing tomatoes, cannabis, microgreens, or orchids — GrowPAR gives you the data to grow smarter.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
- Added light map (5x5 PPFD grid)
- 55+ plant species added
- 3-second countdown timer
- Bug fixes and performance improvements
The developer, Halil Fatih Ozturk, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 10.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 6 more
- English, Arabic, French, German, Italian, Spanish, Turkish
- Age Rating
4+
- 4+
- Provider
Halil Fatih Ozturk
- Halil Fatih Ozturk has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
- Address
Erdinger Straße 13
85570 Markt Schwaben
Germany - Phone Number
+49 17621120207 - Email
hfozturka@hotmail.com
- Copyright
- © 2026 Halil Fatih Öztürk